Posted by Horst Graebner (220.127.116.11) on July 26, 2021 at 08:55:33:
In Reply to: Storing diptychs/triptychs posted by Alex B on July 26, 2021 at 01:00:28:
Look for "Prat" art folders (a French company). They have a folder with three inside flaps sized 652 x 919 mm (outside) and 600 x 850 mm (inside) and also smaller ones.
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